What is most likely true of an atom with a mass of 15 amu?
There are 15 protons.
There are 15 electrons.
The total number of protons and electrons is 15.
The total number of protons and neutrons is 15.
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Answer:
the total NO. of protons and neutrons is 15.
Explanation:
In an atom the total mass is concentrated in the nucleus.
nucleus contain protons and neutrons . that's why total NO. of neutrons and protons is the total mass of an atom.
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